Dispensing-pump.



W. T. HAWKiNS.

DESPENING PUMP. APPUCATION mm nac. 14. me.

Eaented Dec.. 31, 1918.

W.1'.HAWKINS.

DISPENING PUMP. mmc/mow FILED 01.014.191@

Patented Dee. 31,1918.

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WILLIAM T. HAWKINS, 'OF ROCKAWAY, JERSEY.

DISPENSING-PUMP.

Specification of Letters Patent.

Patented Dec. 31, 19185.

Application led December 14, 1916. Serial N o. 137,007.

To all whom 'it may concern:

Be it known that I, WILLIAM T. HAWKINS, a citizen of the United States, residing at Rockaway, in the county of Morris and State of New Jersey, have invented certain new and useful Improvements in Dispensing-Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in dispensing pump, and more particularly to that class adapted to be used for dispensing gasolene and similar products, and my object is to provide a manually operated gear mechanism for operating the pump for dispensing or forcing a certain amount of gasolene or other fluid through a discharge pipe.

A further object is to provide means for controlling the movement of the manually operated Vmechanism whereby said mechanism will be required to move a predetermined distance before the same can be again operated.

A further object is to provide a coin controlled mechanism for controlling the operation of the pump operating mechanism.

And a further object is to provide means for disassociating the coin controlled mechanism from the manually operated portion of the pump mechanism.

Other objects and advantages will be hereinafter set forth and more particularly pointed out in the accompanying specification.

In'the accompanying drawings which are made a part of this application,

'Figure l is an elevation partly in section of the pump operating mechanism.

Fig. 2 is a sectional view as seen on line of Fig. 1.

Fig. 3 is an enlarged sectional view as seen on line 3 3 of Fig. 1.

Fig. 4 is a detail sectional view as seen on line 4 4 of Fig. 1.

Fig. 5 is a top plan view of the com controlled mechanism for regulating the operation of they pump mechanism.

Fig. 6, is an edge elevation .thereof showing one position infull lines and another position in dotted lines.

Fig. '7 is a longitudinal sectional vie thereof in operative position, and

Fig. 8 is a longitudinal sectlonal view partly broken away, showing the manner of locking the tilting portion of the coin operated mechanism when in proper position to operate.

Referring to the drawings in which similar reference numerals designate corresponding parts throughout the several views, 1 indicates a pump cylinder which may be constructed in the usual, or any preferred manner, 2 a discharge pipe from said cylinder, and 3 indicates a rod employed for operating the piston (not shown) within the cylinder.

Positioned a distance above the cylinder is a casing or housing 4 in which is positioned a pair of vertically extending bars 5, said bars projecting a distance above the upper end of the casing, the upper portionsl of said bars being attached to the casing in any suitable manner, as by means of clips 6. Mounted between the bars 5 are racks 7, the upper and lower ends of said racks being connected together by head blocks 8, said head blocks being preferably mortised outat their ends for the reception of the bars 5 to form guides for the racks. Attached to the upper end of the rod 3 is a platform 9, said platform having recesses 10 which fit around the racks 7, said platform also having guide blocks 11 at its ends which overlap the toothed edges of the racks 7.

Extending transversely through the blocks 11 is a shaft l2 upon which are mounted a pair of gears 13, said gears meshing with the teeth of the racks 7 so that when said shaft 12 is rotated, the platform 9 and the rod 3 attached thereto will be elevated to force the contents of the cylinder 1 through the dis? charge pipe 2, the shaft 12 beingpreferably manually operated by means of a crank 14.

The shaft 12 and gears 13 are held against reverse rotation by keying a ratchet wheel 15 to the shaft 12 with which coperates a pawl 16 mounted within the housing 17 surrounding the ratchet wheel so that when rotating motion is imparted to the shaft 12, it will be necessary to move the sameI its full distance upwardly before the platform and pump rod can be again lowered.

In order to release the gears 13 from the racks 7 to permit the platform 9 and rod 3 to descend` after it has reached the upper end of the racks, the gears 13 are splined upon` the shaft 12 so that said gears may move mwardly to disengage from the racks, and in order to automatically operate said gears Vfrom the racks 7, when and release them from the racks, a pair of levers 18 are pivotally mounted on the platform 9, one end of the levers being coupled to the hubs of the gears 13, while the opposite ends thereof rest in the path of a substantially V-shaped trip l19 attached to the upper head block 8, said trip being so positioned that the free ends of the levers 18 will be forced apart and the gears 13 moved inwardly on the shaft until they are disengaged the platform and parts attached thereto will descend by gravityE In order to returnthe gears 13 into engagement with the racks 7 after the platform 9 has reached its lowermost position, Va pair of 'trip arms 20 Vare mounted upon theupper end of the casing 4 vand vin such position as to engage the free ends of the levers 18 and move said free ends toward each other, thereby forcing the gears 13 outwardly on the shaft 12 and into. engagement with the racks 7. y

In order to obviate the necessity of measuring the liquid after it is'forced'from the cylinder, I have 'providedlmeans'for regulating theexact amount of liquid discharged with each operation of the pump rod, comprising the provision 'of an'elongated slot 21 extending ,longitudinally througl'i each of the racks 7 through which project bolts 22, said bolts also extending through the projecting portions of he bars '5, and by moving the racks upwardly or downwardly upon ytion until such timeas the the bars 5 the amount'of liquid discharged with each operation of the rod 3 may be ac-` curately regulated. y

In order that a customer may obtain a predetermined amount of the `gasfolene without v requiring the presence of an attendant, I have provided a coin controlled mechanism which will enable the customer to operate the pump mechanism by depositing a proper coin, and to this end, a frame 23 is positioned within the casing 4 upon which is pivotally mounted a tilting platform 24, said platform having a longitudinally extending channel 25 for the receptionof a plunger 26,

A, 27 when deposited at the ,proper place upon the platform. The platform 24 is, provided with a counter balance 28 .so that the platform may -v receive coins of differentfsizes. and weights anjd'cau's'ed1 to properly balance when the required coin has been d'eposited upon the enf; of theplatform.

In order to hold rod 3'against opera` placed upon theplatform,f a latchv vv29 is sldably mounted 3Q in the rod 3sa1dllat'ch being normally'- ,heldivv-seated inV the notch means vof ak Spring' 3l.A Attached-.t0 thelolt'r 'Gnd of .the

lamhiaaisiarable Saeed cable passing below a' sheave 33"'and engaged with the pull' required coin is" Y upon the 'here @the end 0f the latch being adaptedto engagea notch" "the pull rod whereby an upward pull may be readily given said rod.

In addition to the spring 31 for moving the latch inwardly, a spring 37 is provided in connection with the pull rod 34 for lowering said pull rod after the same has been elevated.

In order to prevent the rod 34 from being operated until the proper coin' has been de-` posited upon the platform 24, a--lockingdog' 38 is pivotally ing'4, one end of whichis adaptedto engage ashoulder 39 ontlie'ipull rody 34,`a`ndthef opposite end a shoulder 40, a. distance above the shoulder 39 and in reverse position to said latter shoulder, the dog'38 servingto hold the rod 34 in elevated position and the latch- 29 out of 30 when-the upper'end of the dogis inengagement with the shoulder40-,thereby peri mitt'ing the pump vmechanism to `be manually l controlled without depositing the coin.

The locking vdog 3.8 vlisndisengaged from the shoulder 39 through the' medium of the coin-27 being foredagainst va leverV 41, through the medium of the plunger 26, one end of the lever 41 being pivotally'mounted in proximity to the channel 25, while the opposite end thereof normally proj ects into the channel 25 and is 'attached to a link 42, said lin-k being in turn end of the locking dog 38, and Vas said locking dog is pivoted at lits longitudinal "center, the outward movement of the free end of the lever 41 will swing-the locking dog upon its ivot` and disengage the lower end lthereof from thc shoulder 39, thus permitting the pull rod 24 to be elevated. In order. to prevent the latch 29 from immediatelyv returning into the notch 30 after au upward pull has been ma-de `upon they rod 34, a guard 43' is slidably mounted upon the rod 3 in suchi position as to immediately descend and cover the notch 30 as soon as the latch 29 has been moved outwardly its"l fulldistance so that should the pull yrod-34 be released before the rod 3 is moved'upwardly, the end ofthe latch 29 will abut against the guard. 43 insteadqofuentering the notch 30. Y

Theplunger 26 is manuallyoperated by extending the handleV 44 upwardly through the upper end of the casing 4v softhat when the coin has been deposited Vupon ythe platform 2l and the channelv 25-brought'i`nto registration with theplungen'said plunger is moved; lengthwise `into ,the channel by' 125 engagement with the notch attached'to the uppery of the frame 23, thereby holding the platform 2e in rigid position until the coin has beenmoved inwardly its full distance and the plunger 26 again returned to its initial position.

The locking rod 45 is formed of a light resilient substance and one of the eyes e6 is attached to the platform 24 so that should a metallic substance of a greater weight than the coin required to balance the platform be placed upon the platform, the end of the platform to which the eye i6 is attached will be swung above a horizontal plane, thus disposing the free end of the locking rod out of registration with the opening 47 so that when an attempt is made to move the plunger inwardly, the end of the locking rod Al5 will engage the solid portion of the end wall 48 and prevent the operation of the plunger 26. The normal position of the platform 24 is shown by full lines in Fig. 6 so that when a coin of the proper weight and dimension is placed upon the platform, said platform will be brought to a horizontal position, as shown by dotted lines in Fig. 6, when the plunger may be operated, as previously described. Should the coin be of a less weight than is required to tilt the platform to a perfectly horizontal position, the same action will result as when a coin heavier than is required is placed upon the platform, except that end of the locking rod 45 will engage the end wall 48 below the opening e7.

When an object heavier than the required coin is placed upon the platform, the end of the platform containing the object will tilt downwardly, thus discharging` the spurious or overweighted coin through an opening 49 in the frame 23, but a lighter coin or object than that required to properly balance the platform will descend into the channel and pass through an opening 50 in the bottom of the platform 24, and through a registering opening 51 in the frame 23, and when a coin of the proper dimension is forced through the channel 25, it will likewise descend through the openings 50 and 51 into any suitable receptacle provided to receive the same.

The link 4t2, in its passage from the lever ll to the locking dog 38, passes through a bracket 52, said bracket having an opening through its upper end which is adapted to register with an opening in the link 42 so that by introducing any suitable object through the openings when in registration, the pull rod 3l may be locked in its elevated position by positioning the shoulder 4() above the upper end of the locking dog before the link is moved outwardly and locked in its outward position. As soon as the plunger 26 is returned to its initial position, the lower end of the locking dog 38 is iinmediately thrown outwardly into the path of the shoulder 39 by means of a spring 53, one end of which is attached to parts of the casing 4 and the other end dos It will thus be seen that I have provided a dispensing device which may be used in the ordinary manner or one that can be converted into a coin controlled device, and it will likewise be seen that instead of dispensing the liquid in gallons or fractions thereof that a sufcient amount of the liquid may be dispensed to correspond to the cost thereof in fractions of a dollars, or in other words, if the cost per gallon is more than a fourth of a dollar, the racks 7 may beso set as to dispense an amount slightly less than two gallons, or a sufficient amount to correspond to fifty cents in value, so that by placing a half dollar upon the platform 24, a sufficient amount of the liquid will be dispensed to fully cover the value of the fifty cents.

It will likewise be seen that this device can be readily standardized and applied to the usual form of pump now in general use at a nominal expense, and by properly constructing the various parts, the racks may be quickly adjusted to dispense any amount of the liquid desired.

I claim 1. The combination with a pump cylinder and piston rod, of a vertically extending rack bar mounted above said cylinder, a platform connected to said piston rod, a shaft carried by said platform, a gear slidably mounted upon said shaft and rotatable therewith to engage said rack, means to move said gear out of engagement with the rack when the platform is elevated, and means t0 rengage said gear with the rack when the platform is lowered.

2. The combination with a pump cylinder and piston rod, of vertically extended rack bars mounted above said cylinder, means for adjusting said rack bars, a platform connected to said piston rod, a shaft carried by said platform, gears slidably mounted upon said shaft and rotatable therewith to coperate with said racks, means at the upper end of said rack bars to shift said gears from engagement with said racks, and means at the lower end of said racks to shift said gears into engagement with said `racks.

3. The combination with a cylinder and a rod coperating with said cylinder, of a pair of spaced bars, a pair of spaced racks' etween said bars, means to vertically adjust said racks with respect to said bars, a platform attached to the upper end of said rod, a shaft rotatably mounted on said plat- Y form, means to rotate said shaft, a pair of gears rotatable with said shaft and slidable thereon, levers attached to said gears, means to disengage said gears from said racks when the platform has reached its upward stroke, and additional means to rengage said gears to an arm on the locking with the racks when the platform has 4reached its lovvermost stroke.

4. In a pumping device of the class described, the Combination With a cylinder and a rod cooperating therewith, of a pair of racks, a platform attached to said rod, a shaft rotatably mounted on said platform, means to prevent reverse rotation of said shaft, a pair of gears rotatable with and slidably mounted upon said shaft, said gears meshing with said racks, a lever attached to each gear adapted to move the gears into In testimony whereof I have ksigned my name to this specification inthe presencev of tWp subscribing Witnesses.

WILLIAM T. HAWKINS.

Witnesses:

Fonnns'r H. IIAWKINS, A. J. YETTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

